Chair frame



FIG. 1 is a front isometric view of a chair frame showing the new design;

FIG. 2 is a front view thereof;

FIG. 3 is a left side view, the opposite side view being a mirror image thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a bottom view thereof; and,

FIG. 6 is a top view thereof. 

The ornamental design for a chair frame, as shown and described. 